/**
 * #      567
 * 名称   字符串的排列
 * 链接   https://leetcode-cn.com/problems/permutation-in-string
 * 题解   [754](https://leetcode-cn.com/problems/permutation-in-string/solution)
 * 通过率 42.0%
 * 难道   中等
 */

